The Most Efficient Diesel Cars Still Available

In an era where electric vehicles (EVs) dominate headlines and hybrid technology continues to evolve, diesel cars still hold a unique place in the automotive market. Renowned for their fuel efficiency, long-range capabilities, and robust torque, diesel-powered vehicles remain a compelling choice for drivers who prioritize economy and performance—especially for long-distance commuters and those who frequently tow heavy loads.

Although stricter emissions regulations have led many manufacturers to phase out diesel engines in favor of electrified alternatives, several models still offer outstanding efficiency without sacrificing driving dynamics. Below, we explore some of the most fuel-efficient diesel cars still available today, highlighting their key features, real-world mileage, and why they remain relevant in an increasingly electrified world.

1. Volkswagen Golf TDI

Fuel Efficiency: Up to 60 mpg (UK) / 50 mpg (US)

The Volkswagen Golf has long been a benchmark for compact hatchbacks, and the diesel-powered TDI variant continues to impress with its frugal fuel consumption. The latest iteration of the Golf TDI features a refined 2.0-liter turbocharged diesel engine paired with a smooth-shifting DSG automatic transmission (or a manual, depending on the market).

Why It Stands Out:

• Outstanding MPG: Capable of achieving over 60 mpg (UK) on highways.
• Premium Interior: High-quality materials and advanced infotainment.
• Strong Resale Value: Diesel Golfs retain their value well due to reliability.

While VW has reduced diesel offerings in some regions, the Golf TDI remains a top choice for those seeking a balance of efficiency, practicality, and driving enjoyment.

2. BMW 320d / 520d

Fuel Efficiency: Up to 58 mpg (UK) / 49 mpg (US)

BMW’s EfficientDynamics technology ensures that their diesel models remain among the most economical in the luxury segment. The 320d (3 Series) and 520d (5 Series) are particularly noteworthy, combining BMW’s signature driving dynamics with impressive fuel economy.

Why They Stand Out:

• Exceptional Refinement: BMW’s diesel engines are smooth and quiet.
• Performance & Efficiency: The 320d can achieve 0-60 mph in under 7 seconds while still sipping fuel.
• Mild-Hybrid Options: Some newer models incorporate 48V hybrid systems for even better efficiency.

For drivers who want a premium sedan without sacrificing efficiency, these BMW diesels deliver in spades.

3. Mercedes-Benz C 220 d / E 220 d

Fuel Efficiency: Up to 56 mpg (UK) / 47 mpg (US)

Mercedes-Benz has long been a leader in diesel luxury cars, and the C 220 d and E 220 d continue this tradition. Both models feature a 2.0-liter turbodiesel engine with mild-hybrid assistance, improving both fuel economy and responsiveness.

Why They Stand Out:

• Luxury & Comfort: Plush interiors with cutting-edge tech.
• Strong Torque: Ideal for effortless highway cruising.
• Eco-Friendly Innovations: AdBlue emissions treatment ensures compliance with modern regulations.

These models prove that diesel engines can still be both efficient and luxurious.

4. Skoda Octavia TDI

Fuel Efficiency: Up to 62 mpg (UK) / 52 mpg (US)

The Skoda Octavia, based on the same platform as the Volkswagen Golf, offers even more space and practicality while maintaining excellent fuel efficiency. The 1.6 TDI and 2.0 TDI variants provide a great balance of performance and economy.

Why It Stands Out:

• Huge Boot Space: One of the most practical compact cars available.
• Affordable Running Costs: Lower purchase price than premium rivals.
• Reliability: Skoda’s reputation for durability makes it a smart long-term choice.

For families or business users needing a frugal yet spacious car, the Octavia TDI is hard to beat.

5. Peugeot 308 BlueHDi

Fuel Efficiency: Up to 65 mpg (UK) / 54 mpg (US)

Peugeot’s 308 BlueHDi is one of the most fuel-efficient diesel hatchbacks on the market. The 1.5-liter and 2.0-liter diesel engines offer a superb blend of economy and drivability, while the sleek design and premium interior elevate it above many rivals.

Why It Stands Out:

• Best-in-Class MPG: One of the few non-hybrids achieving over 60 mpg.
• Stylish & Modern: Sharp exterior and high-tech cabin.
• Great for Long Trips: Low fuel consumption makes it ideal for motorway driving.

If outright fuel efficiency is the priority, the 308 BlueHDi is a standout choice.

6. Audi A4 / A6 TDI

Fuel Efficiency: Up to 57 mpg (UK) / 48 mpg (US)

Audi’s A4 35 TDI and A6 40 TDI models demonstrate that executive cars can be both efficient and powerful. With quattro all-wheel-drive options and refined diesel engines, these sedans offer a compelling alternative to petrol or hybrid rivals.

Why They Stand Out:

• All-Wheel-Drive Capability: Ideal for those needing extra traction.
• Superb Build Quality: Audi’s attention to detail is unmatched.
• Long-Distance Comfort: Perfect for business travelers.

For those who want a premium badge with diesel efficiency, Audi’s TDI models remain excellent options.

7. Hyundai i30 / Kia Ceed CRDi

Fuel Efficiency: Up to 61 mpg (UK) / 51 mpg (US)

Korean manufacturers Hyundai and Kia have made significant strides in diesel technology. The Hyundai i30 1.6 CRDi and Kia Ceed 1.6 CRDi offer outstanding fuel economy with long warranties for peace of mind.

Why They Stand Out:

• 7-Year Warranties: Industry-leading coverage.
• Low Ownership Costs: Affordable servicing and insurance.
• Well-Equipped: Even base models come with generous tech features.

For budget-conscious buyers who still want diesel efficiency, these Korean models are excellent picks.

Are Diesel Cars Still Worth It in 2024?

Despite the rise of EVs and hybrids, diesel cars remain relevant for certain drivers:

✅ Long-Distance Commuters: Diesel excels at highway cruising with minimal fuel stops.
✅ Towing & Heavy Loads: Diesel torque is unmatched for trailers or caravans.
✅ Used Market Value: Well-maintained diesel cars often hold value better than petrol equivalents.

However, diesel ownership comes with considerations:

❌ Stricter Emissions Regulations: Some cities impose restrictions on older diesel models.
❌ Higher Initial Cost: Diesel engines are typically more expensive than petrol.
❌ Future Resale Uncertainty: As electrification grows, diesel demand may decline.

Final Thoughts

While the automotive industry shifts toward electrification, diesel cars still offer unbeatable efficiency for certain drivers. Models like the Volkswagen Golf TDI, BMW 320d, and Peugeot 308 BlueHDi prove that diesel technology remains viable—especially for those who prioritize long-range driving and fuel savings.

If you frequently cover high mileage, tow heavy loads, or simply prefer the driving characteristics of a diesel, these models represent the best of what’s still available. However, with diesel options gradually disappearing from new lineups, now may be the time to secure one before they become a rarity.

Would you still consider buying a diesel car in 2024? Let us know your thoughts!